Find the greatest value among the lengths of the names of all customers in the database.
CREATE TABLE customers (customer_id varchar, name varchar); INSERT INTO customers (customer_id, name) VALUES ('C001', 'John'), ('C002', 'Jane'), ('C003', 'Alexander');
```sql
SELECT MAX(LENGTH(name)) AS max_name_length FROM customers;
```
```sql
SELECT MAX(LENGTH(name)) AS max_name_length FROM customers;
```